The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2022
Filed:
Mar. 19, 2019
Tdk Corporation, Tokyo, JP;
Masakazu Hirose, Tokyo, JP;
Yuiko Hirose, Tokyo, JP;
Hiroki Katoh, Tokyo, JP;
Tamotsu Sasaki, Tokyo, JP;
Yuji Umeda, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A piezoelectric composition containing: a complex oxide having a perovskite structure represented by a general formula of ABO; copper; and one or more elements selected from the group consisting of chromium, nickel and zinc, in which in ABO, an A-site element is potassium and a B-site element is niobium, or niobium and tantalum, with respect to 1 mol of the complex oxide, a content ratio of the copper is α mol % in terms of CuO, a content ratio of one or more elements selected from the group consisting of chromium, nickel and zinc is β mol % in terms of CrO, NiO, ZnO, α satisfies a relationship of 0.2≤α≤2.5, and β satisfies a relationship of 0.2≤β≤2.0.